Autocorrelation and Memory Allocation for Wireless Communication

2. The apparatus of claim 1, wherein the narrowband IoT band corresponds to a sub-6 GHz band.

3. The apparatus of claim 1, wherein the plurality of transmission devices are configured to operate on a sub-6 GHz band or on a shared spectrum for unlicensed wireless spectrum uses.

4. The apparatus of claim 1, wherein the plurality of transmission devices comprises one or more of an IoT device, a virtual reality device, a mobile device, a drone, a communication device, or a vehicle device.

5. The apparatus of claim 1, wherein the plurality of transmission devices comprises a sensor device for detecting energy, heat, light, vibration, or biological signals.

6. The apparatus of claim 1, wherein the first narrowband IoT transmission and the second narrowband IoT transmission are within a frequency band having a bandwidth of between 1 MHz and 20 MHz.

10. The non-transitory computer-readable storage medium of claim 7, wherein the symbols indicative of the first, second, third and fourth narrowband IoT transmission are converted from frequency-domain symbols including frequency-domain OFDM symbols.

12. The non-transitory computer-readable storage medium of claim 7, wherein the programming instructions for execution by the processor are retrieved from a network via an I/O interface, and wherein the processor is configured to store and update the autocorrelation matrix at a plurality of memory cells in a memory device.

14. The method of claim 13, wherein the first IoT transmissions and the second IoT transmissions are within a frequency band having a bandwidth of between 1 MHz and 20 MHz.

15. The method of claim 13, wherein each of the plurality of receive paths is associated with a respective antenna.

16. The method of claim 13, wherein the plurality of first IoT transmissions and the plurality of second IoT transmissions comprise frequency-domain symbols including OFDM symbols.

18. The method of claim 13, wherein updating the autocorrelation matrix comprises adding the autocorrelation matrix by the autocorrelation of symbols representing the plurality of second IoT transmissions.

19. The method of claim 18, wherein each of the plurality of first IoT transmissions and the plurality of second IoT transmissions comprise a respective vector having a size based at least on a number of receive paths in the plurality of receive paths.

20. The method of claim 19, wherein a size of the autocorrelation matrix is based at least on the number of receive paths in the plurality of receive paths.